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Finding the Fourth Proportional to 347.79, 519.72 and 306.18

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Solution

The fourth proportional to 347.79, 519.72 and 306.18 is: 457.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.79 : 519.72 = 306.18 : x
  2. Step 2: Convert to fraction form
    347.79/519.72 = 306.18/x
  3. Step 3: Cross multiply
    347.79x = 519.72 × 306.18
  4. Step 4: Simplify right side
    347.79x = 159,126.72
  5. Step 5: Solve for x
    x = 159,126.72/347.79
  6. Step 6: Final answer
    x = 457.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.